cheating-is-good

Best answer as chosen by Asker / Ratings
Unfortunately, I do not know any of the Gameshark codes for this game, so you will have to look yourself if you want the code for Pokemon Crystal. There is however, another way that I know of that will get you your evolution stones. What you have to do is find Four People in the game, and each one of these people will give you a certain evolution stone. You might have already fought them, and added them to your list of contacts. Below is the name of the person who will give you the stone, and what stone it is that they give you.

Fire Stone Giver- Schoolboy Allan. You can find Schoolboy Allan on Route 36, battle him then add him. Thunderstone Giver- Lass Dana. You can find this little lass on Route 38.

Waterstone Giver- Fisherman Tully. You can find him fishing along Route 42. Leafstone Giver- Gina. She should be somewhere around he Goldenrod City Daycare. If not, then you will have to look for her yourself. Hope this helps.